*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#F5F4F0;--surface:#FFFFFF;--surface-hover:#F9F9F7;--surface-active:#F2F1ED;--border:#E5E4DF;--border-strong:#D0CFC9;--text:#111111;--text-secondary:#666666;--text-muted:#AAAAAA;--accent:#111111;--accent-fg:#FFFFFF;--danger:#C0392B;--danger-bg:#FFF2F2;--danger-border:#FECACA;--warning:#92400E;--warning-bg:#FFFBEB;--warning-border:#FDE68A;--success:#14532D;--success-bg:#F0FFF4;--success-border:#BBF7D0;--info:#1E3A5F;--info-bg:#EFF6FF;--info-border:#BFDBFE;--radius-xs:4px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--shadow-sm:0 1px 2px rgba(0,0,0,0.04),0 1px 4px rgba(0,0,0,0.04);--shadow-md:0 4px 6px rgba(0,0,0,0.05),0 10px 20px rgba(0,0,0,0.06);--font:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;--sidebar-w:220px;--header-h:56px;--transition:150ms ease}body,html{height:100%;font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none}button,input,select,textarea{font-family:var(--font);font-size:14px}input,select,textarea{outline:none}h1{font-size:22px;font-weight:700}h2{font-size:18px}h2,h3{font-weight:600}h3{font-size:15px}h4{font-size:13px;font-weight:600}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}